EP0530201B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A catheter liner and a method of making the same
Assignee: W.L. Gore and Associates Inc
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Filing: 1991-03-15
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Granted: 1994-08-03
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Expires: 2011-03-15
Abstract
Abstract A fluoropolymeric thinwall catheter liner of tape-wrapped construction is described, as well as a catheter tube comprising said catheter liner and a method of making such a catheter liner. By wrapping a tape of a thin fluoropolymer around a mandrel to form a tube it is possible to produce a fluoropolymeric catheter liner of thinner wall than has been previously possible with tube extrusion techniques. A thinner wall allows an increase in the carrying capacity of any catheter of given outside diameter, thereby increasing the effectiveness of the catheter.
Inventors
- 👤 Jerald Mathew Crawley
- 👤 Daniel Francis Davidson
- 👤 David John Myers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 10:45
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0012; A61M25/0043; A61M25/0045; A61M25/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
23 words
A catheter liner comprised of a fluoropolymer characterized in that a fluoropolymer tape (11) is wrapped into the form of a tube (6).
Claim 2
Dependent Claim
14 words
A catheter liner according to claim 1 wherein said tape (11) is helically applied.
Claim 3
Dependent Claim
14 words
A catheter liner according to claim 1 wherein said tape (11) is longitudinally applied.
Claim 4
Dependent Claim
27 words
A catheter liner according to claim 1 wherein said tape (11) is applied in at least two layers wherein one layer (12) overlaps the other layer (11).
Claim 5
Dependent Claim
18 words
A catheter liner according to claim 4 wherein said overlapping tape layers (11) and (12) are melt-bonded together.
Claim 6
Dependent Claim
24 words
A catheter liner according to claim 1 wherein said liner (6) has a wall thickness less than or equal to 0.038 mm (0.0015 inches).
Claim 7
Dependent Claim
24 words
A catheter liner according to claim 1 wherein said liner (6) has a wall thickness less than or equal to 0.025 mm (0.0010 inches).
Claim 8
Dependent Claim
47 words
A catheter tube comprised of a fluoropolymer tubular liner (6) and at least one outer tubular jacket (7) that concentrically surrounds said tubular liner (6), characterized in that the fluoropolymer tubular liner (6) is made from a fluoropolymer tape (11) wrapped into the form of a tube.
Claim 9
Dependent Claim
16 words
A catheter tube according to claim 8 wherein said outer jacket (7) is comprised of polyethylene.
Claim 10
Dependent Claim
20 words
A catheter tube according to claim 8 wherein said outer jacket (7) is comprised of braided stainless steel wire (13).
Claim 11
Dependent Claim
15 words
A catheter liner according to claim 1 wherein the fluoropolymer tube has a spiral seam.
Claim 12
Dependent Claim
15 words
A catheter liner according to claim 1 wherein the fluoropolymer tube has a longitudinal seam.
Claim 13
Dependent Claim
26 words
A catheter liner according to claim 11 or 12 wherein said tube (6) has a wall thickness less than or equal to 0.025 mm (0.0010 inch).
Claim 14
Independent Claim
24 words
A method of making a fluoropolymeric catheter liner which comprises wrapping a fluoropolymer tape (11) around a mandrel (10) to form a tube (6).
Claim 15
Dependent Claim
15 words
The method of claim 14 wherein the tape (11) is helically wrapped around said mandrel.
Claim 16
Dependent Claim
16 words
The method of claim 14 wherein the tape (11) is longitudinally wrapped around said mandrel (10).
Claim 17
Dependent Claim
21 words
The method of claim 14 wherein said tape (11) is wrapped in overlapping layers, further comprising melt-bonding said overlapping layers together.
Claim 18
Dependent Claim
16 words
The method of claim 14 which further comprises removing the mandrel (10) from the catheter liner.
References Cited (Backward Citations)
No citation records indexed.
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